Tables 19 and 20 — Tables & Multiplication Mastery

How it works

Ten and a bit — “19 × n = 10 × n + 9 × n”

1. 20 × n: double n and write a 0 after it.
2. 19 × n = 10 × n + 9 × n.
3. Or round and adjust: 19 × n = 20 × n − n.

Use it for: Scores, money in ₹20 notes, and the round-and-adjust trick in Module 3.

Worked example: 19 × 7 = 133

✏️ Practice

Work it out in your head or on paper, then tap your answer — or type it and press Check. Stuck? Press “Show me how”.

🏁 Lesson 12 test

20 questions. Check each answer, then go to the next one. Get 16 or more right to pass.

🏅 Sign in with Google to earn the 🚀 Twenty Rocket badge when you pass — and a certificate when you finish all 6 lessons of Module 2 · Tables 11–20. You can still take the test without signing in.

🖨️ Table of 19 and 20 Worksheet

• Worksheet set 1 (PDF)
• Worksheet set 2 (PDF)
• Worksheet set 3 (PDF)